CN201891114U

CN201891114U - Dual radial mesh cage sandstone pile

Info

Publication number: CN201891114U
Application number: CN 201020603436
Authority: CN
Inventors: 汪中卫; 刘敏; 周黎月; 朱嵘
Original assignee: SHANGHAI MUNICIPAL ENGINEERING SURVEY AND DESIGN Co Ltd; Shanghai Municipal Engineering Design Insitute Group Co Ltd
Current assignee: SHANGHAI MUNICIPAL ENGINEERING SURVEY AND DESIGN Co Ltd; Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date: 2010-11-11
Filing date: 2010-11-11
Publication date: 2011-07-06
Anticipated expiration: 2020-11-11

Abstract

The utility model discloses a dual radial mesh cage sandstone pile which is characterized in that the mesh cage sandstone pile comprises a lateral restraint mesh cage, wherein a braided cage is arranged outside the lateral restraint mesh cage; graded sandstones are filled in the lateral restraint mesh cage; and crack pouring packing is filled between the lateral restraint mesh cage and the braided cage. The dual radial mesh cage sandstone pile has the beneficial effects that the bearing capacity of the sandstone pile is improved, and the self-sedimentation of the pile is reduced, while the building material consumption is reduced, the construction cost is lowered, and the auxiliary functions of the pile besides the bearing capacity and resistance to deformation are expanded. Under the condition that the diameter of the pile is controlled, the uniformity, stability and construction quality of foundation reinforcement are improved, the designers can conveniently define the design parameters, and the design is convenient to popularize.

Description

Dual radially cylinder mould sand-gravel pile

Technical field:

The utility model relates to the Construction of Civil Engineering technical field, is specifically related to a kind of dual radially cylinder mould sand-gravel pile.

Background technology:

Along with being surging forward of industries such as the fast development of urban construction and traffic, harbour, harbour, more and more because of the excessive object of construction production that need handle of sedimentation behind bearing capacity of foundation soil deficiency or the ground load-bearing, select a kind of effective and cheap reinforcement means to become the research hot issue of Construction of Civil Engineering technical field.In the abundant area of some sandstone material (or other granular discrete material), the sand-gravel pile method is because the cheap foundation reinforcement method that forms to first-selection of its prices of raw and semifnished materials.But because sandstone material is a discrete material, substantially there is not adhesion stress between the particle, therefore and its soil nature of the ground that needs reinforcement itself is just relatively poor, and the lateral restriction that sand-gravel pile side soil is provided when vertically bearing big load is not enough and easily produce side and expand, thereby destroys.Simultaneously at work progress since the lateral confinement scarce capacity of the soil body to cause filling out process king-pile self diameter at stake hole rammer wayward, often every materials are obviously bigger than normal and wayward, the average stake footpath of each is not of uniform size after the pile, and supporting capacity and load-bearing deformation rigidity discreteness cause workmanship to be difficult for guaranteeing greatly; Owing to the uncontrollability of pile body diameter in the construction, cause the designer to be difficult to determine its specific design parameter simultaneously, brought significant limitation for the engineering application of sand-gravel pile.

The utility model content:

The purpose of this utility model provides a kind of dual radially cylinder mould sand-gravel pile, can overcome traditional sand-gravel pile and cause its vertical bearing capacity low because of anti-lateral confinement ability, and be shaped wayward and cause the problem of design value difficulty.

To achieve these goals, technology division of the present utility model is: a kind of dual radially cylinder mould sand-gravel pile, it is characterized in that this cylinder mould sand-gravel pile comprises the lateral restraint cylinder mould, the lateral restraint cylinder mould is provided with the braiding cage outward, the lateral restraint cylinder mould is filled with the graded sand building stones, fills cementation of fissures filler between lateral restraint cylinder mould and the braiding cage.According to an embodiment of the present utility model, the lateral restraint cylinder mould is cylindric rebar cylinder mould, is used to retrain lateral deformation.The braiding cage adopts cylindric woven bag, is used to improve cementation of fissures filler effect.

The beneficial effects of the utility model are when improving the sand-gravel pile bearing capacity and reducing stake self sedimentation, can save a large amount of constructional materials consumptions, reduce engineering cost, the miscellaneous function of expansion stake simultaneously except that carrying and resistance to deformation.Under the controlled situation in stake footpath, help improving uniformity, stability and the workmanship of ground stabilization, help the clear and definite design parameters of designer simultaneously, be convenient to design and promote.

Description of drawings:

Fig. 1 is a schematic diagram of the present utility model.

Fig. 1 a is the sectional side elevation of Fig. 1.

Fig. 1 b is the cross-sectional figure of Fig. 1.

Fig. 1 c is the structural representation of rebar cylinder mould.

Fig. 1 d is the cross-sectional figure of rebar cylinder mould.

Fig. 2 is the schematic diagram of prior art.

Fig. 2 a is the A-A sectional side elevation of Fig. 2.

Fig. 2 b is the cross-sectional figure of the B-B of Fig. 2.

The specific embodiment:

Below in conjunction with drawings and Examples the utility model is further described.

Among the figure: 1. the utility model sand-gravel pile, 1a. traditional sand-gravel pile, 2. terrace line, 3. cylindric woven bag, 4. cementation of fissures filler, 5. sandstone material, 6. cylindric rebar cylinder mould, 7. vertical stiffener, 8. reinforcing bar (silk) net sheet, 9. level is to strengthening stirrup, 10. traditional sand-gravel pile outer contour, 11. traditional sand-gravel pile design stake footpaths.

The utility model is a kind of dual radially cylinder mould sand-gravel pile 1, it is characterized in that this cylinder mould sand-gravel pile 1 comprises the lateral restraint cylinder mould, the lateral restraint cylinder mould is provided with the braiding cage outward, and the lateral restraint cylinder mould is filled with graded sand building stones 5, fills cementation of fissures filler 4 between lateral restraint cylinder mould and the braiding cage.According to an embodiment of the present utility model, the lateral restraint cylinder mould adopts cylindric rebar cylinder mould 6, is used to retrain lateral deformation.Under the situation that satisfies the requirement of location and load-bearing, rebar cylinder mould 6 also can be by other material substitution, as substitution material such as mao bamboon or other synthetic materials.The braiding cage adopts cylindric woven bag 3, is used to improve cementation of fissures filler effect.Cylindric woven bag 3 has certain water permeability, but simultaneously anti-filter ability is arranged again, and cementation of fissures filler oozes out woven bag in a large number when filled to avoid.Also available other material substitution that satisfies water permeability and anti-filter ability of woven bag is as geomembrane etc.Cementation of fissures filler constitute to select that very strong function modulability is arranged, and can select corresponding filler composition according to concrete engine request, removes other function carrying to satisfy stake, is that dank material such as yellow ground can play the effect of sand drain consolidation draining simultaneously as filler.As shown in the figure, this cylindric rebar cylinder mould comprises cylindric reinforced mesh 8, is provided with vertical stiffener 7 and level on this cylindric reinforced mesh 8 to strengthening stirrup 9.Reinforced mesh 8 adopts Φ 6～Φ 8 reinforcing bars to be woven into square net, the grid maximum spacing should be not more than the sandstone material particle diameter corresponding to 80% screening, vertical stiffener 7 is uniform along peripheral annular according to quantity, and level adopts Φ 12～Φ 14 reinforcing bars, spacing 1.8～2.2m to strengthening stirrup 9.

By the specific embodiment as seen, the utility model provides a kind of new dual radially cylinder mould sand-gravel pile, can improve the ability of its anti-lateral confinement and effectively control its expanded diameter by increasing the lateral restraint parts, improves its pile controllability.Can overcome the anti-lateral confinement ability of traditional sand-gravel pile weak, can't effectively control defectives such as pile body diameter and pile capacity difference.

Claims

1. a dual radially cylinder mould sand-gravel pile is characterized in that this cylinder mould sand-gravel pile comprises the lateral restraint cylinder mould, and the lateral restraint cylinder mould is provided with the braiding cage outward, and the lateral restraint cylinder mould is filled with the graded sand building stones, fills cementation of fissures filler between lateral restraint cylinder mould and the braiding cage.

2. sand-gravel pile as claimed in claim 1 is characterized in that: the lateral restraint cylinder mould adopts cylindric rebar cylinder mould, and the braiding cage adopts cylindric woven bag.

3. sand-gravel pile as claimed in claim 1 is characterized in that: this cylindric rebar cylinder mould comprises cylindric reinforced mesh, is provided with vertical stiffener and level on this cylindric reinforced mesh to strengthening stirrup.